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45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
from unittest import TestCase
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from testfixtures import LogCapture
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from scrapy.http import Request, Response
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from scrapy.settings import Settings
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from scrapy.spidermiddlewares.urllength import UrlLengthMiddleware
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from scrapy.spiders import Spider
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from scrapy.utils.test import get_crawler
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class TestUrlLengthMiddleware(TestCase):
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def setUp(self):
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self.maxlength = 25
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settings = Settings({"URLLENGTH_LIMIT": self.maxlength})
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crawler = get_crawler(Spider)
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self.spider = crawler._create_spider("foo")
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self.stats = crawler.stats
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self.mw = UrlLengthMiddleware.from_settings(settings)
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self.response = Response("http://scrapytest.org")
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self.short_url_req = Request("http://scrapytest.org/")
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self.long_url_req = Request("http://scrapytest.org/this_is_a_long_url")
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self.reqs = [self.short_url_req, self.long_url_req]
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def process_spider_output(self):
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return list(
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self.mw.process_spider_output(self.response, self.reqs, self.spider)
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)
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def test_middleware_works(self):
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self.assertEqual(self.process_spider_output(), [self.short_url_req])
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def test_logging(self):
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with LogCapture() as log:
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self.process_spider_output()
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ric = self.stats.get_value(
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"urllength/request_ignored_count", spider=self.spider
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)
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self.assertEqual(ric, 1)
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self.assertIn(f"Ignoring link (url length > {self.maxlength})", str(log))
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